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[APD] Re: Chemists: Aluminum and the Freshwater Aquarium?

I want to add a cooling system to my tank and have devised a way to add a small aluminum 'radiator' and fan. The radiator is actually an all-aluminum transmission oil cooler from the local car parts store. My question is: How long can I expect it to last before corrosion will cause a leak? I'm willing to saw it in half after a year or so to look inside, but if it might last a while longer that would be nice to know. I keep the tank around neutral pH, GH and KH are average, if that makes a difference.

I haven't tried a circulating setup, but I have had a piece of aluminum wire in several of my tanks for over 5 years and it shows no signs of corrosion (I used it as a cucumber-kabob for some fish). I would imagine you will get many, many years out of an aluminum radiator. The thing that really kills aluminum is salt spray, so you wouldn't want to use a setup like this on a saltwater setup.


Waveform Technology
UNIX Systems Administrator

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